Metallic tungsten carbide nanoparticles as a near-infrared-driven photocatalyst

Weicheng Huang; Hongxue Meng; Yan Gao; Jinxin Wang; Chunyu Yang; Danqing Liu; Jian Liu; Chongshen Guo; Bin Yang; Wenwu Cao

doi:10.1039/c9ta03151k

Metallic tungsten carbide nanoparticles as a near-infrared-driven photocatalyst

Weicheng Huang, Hongxue Meng, Yan Gao, Jinxin Wang, Chunyu Yang, Danqing Liu, Jian Liu, Chongshen Guo, Bin Yang, Wenwu Cao

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Abstract

Employing near infrared (NIR) light for photocatalytic reactions is preferable, considering effective solar utilization. Herein, the metalloid of tungsten carbide (WC) was used as an NIR-driven photocatalyst for the photodegradation of organic pollutants for the first time. The noble metal-like electronic properties of WC were proven via the analysis of its electronic occupied state using ultraviolet photoelectron spectroscopy and valence band XPS. In addition, both the experimental evidence and 3D finite element simulation revealed the NIR-responsive localized surface plasmon resonance (LSPR) behavior of the WC nanoparticles. Accordingly, the WC nanoparticles exhibited excellent UV-visible-NIR full-spectrum absorption, high NIR-triggered photocurrent response and resultant NIR-driven photocatalytic degradation performance. The NIR-mediated photocatalytic mechanism of WC was proposed based on a radical scavenging test, fluorescence observation of radical generation and spin-trapping electron paramagnetic resonance measurements. Hence, metallic WC with NIR absorption and photocatalytic activity may pave the way for the design of full-solar-spectrum-responsive photocatalysts.

Original language	English (US)
Pages (from-to)	18538-18546
Number of pages	9
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	31
DOIs	https://doi.org/10.1039/c9ta03151k
State	Published - 2019

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General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

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title = "Metallic tungsten carbide nanoparticles as a near-infrared-driven photocatalyst",

abstract = "Employing near infrared (NIR) light for photocatalytic reactions is preferable, considering effective solar utilization. Herein, the metalloid of tungsten carbide (WC) was used as an NIR-driven photocatalyst for the photodegradation of organic pollutants for the first time. The noble metal-like electronic properties of WC were proven via the analysis of its electronic occupied state using ultraviolet photoelectron spectroscopy and valence band XPS. In addition, both the experimental evidence and 3D finite element simulation revealed the NIR-responsive localized surface plasmon resonance (LSPR) behavior of the WC nanoparticles. Accordingly, the WC nanoparticles exhibited excellent UV-visible-NIR full-spectrum absorption, high NIR-triggered photocurrent response and resultant NIR-driven photocatalytic degradation performance. The NIR-mediated photocatalytic mechanism of WC was proposed based on a radical scavenging test, fluorescence observation of radical generation and spin-trapping electron paramagnetic resonance measurements. Hence, metallic WC with NIR absorption and photocatalytic activity may pave the way for the design of full-solar-spectrum-responsive photocatalysts.",

author = "Weicheng Huang and Hongxue Meng and Yan Gao and Jinxin Wang and Chunyu Yang and Danqing Liu and Jian Liu and Chongshen Guo and Bin Yang and Wenwu Cao",

note = "Funding Information: This work was nancially supported by the National Natural Science Foundation of China (No. 51572056, 51572059, 51602083 & 81600539), Heilongjiang Provincial Natural Science Foundation for Distinguished Young Scholar (Grant No. JC2017001), and Harbin Applied Technology Research and Development Project (2017RAXXJ003).",

year = "2019",

doi = "10.1039/c9ta03151k",

language = "English (US)",

volume = "7",

pages = "18538--18546",

journal = "Journal of Materials Chemistry A",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Metallic tungsten carbide nanoparticles as a near-infrared-driven photocatalyst

AU - Huang, Weicheng

AU - Meng, Hongxue

AU - Gao, Yan

AU - Wang, Jinxin

AU - Yang, Chunyu

AU - Liu, Danqing

AU - Liu, Jian

AU - Guo, Chongshen

AU - Yang, Bin

AU - Cao, Wenwu

N1 - Funding Information: This work was nancially supported by the National Natural Science Foundation of China (No. 51572056, 51572059, 51602083 & 81600539), Heilongjiang Provincial Natural Science Foundation for Distinguished Young Scholar (Grant No. JC2017001), and Harbin Applied Technology Research and Development Project (2017RAXXJ003).

PY - 2019

Y1 - 2019

N2 - Employing near infrared (NIR) light for photocatalytic reactions is preferable, considering effective solar utilization. Herein, the metalloid of tungsten carbide (WC) was used as an NIR-driven photocatalyst for the photodegradation of organic pollutants for the first time. The noble metal-like electronic properties of WC were proven via the analysis of its electronic occupied state using ultraviolet photoelectron spectroscopy and valence band XPS. In addition, both the experimental evidence and 3D finite element simulation revealed the NIR-responsive localized surface plasmon resonance (LSPR) behavior of the WC nanoparticles. Accordingly, the WC nanoparticles exhibited excellent UV-visible-NIR full-spectrum absorption, high NIR-triggered photocurrent response and resultant NIR-driven photocatalytic degradation performance. The NIR-mediated photocatalytic mechanism of WC was proposed based on a radical scavenging test, fluorescence observation of radical generation and spin-trapping electron paramagnetic resonance measurements. Hence, metallic WC with NIR absorption and photocatalytic activity may pave the way for the design of full-solar-spectrum-responsive photocatalysts.

AB - Employing near infrared (NIR) light for photocatalytic reactions is preferable, considering effective solar utilization. Herein, the metalloid of tungsten carbide (WC) was used as an NIR-driven photocatalyst for the photodegradation of organic pollutants for the first time. The noble metal-like electronic properties of WC were proven via the analysis of its electronic occupied state using ultraviolet photoelectron spectroscopy and valence band XPS. In addition, both the experimental evidence and 3D finite element simulation revealed the NIR-responsive localized surface plasmon resonance (LSPR) behavior of the WC nanoparticles. Accordingly, the WC nanoparticles exhibited excellent UV-visible-NIR full-spectrum absorption, high NIR-triggered photocurrent response and resultant NIR-driven photocatalytic degradation performance. The NIR-mediated photocatalytic mechanism of WC was proposed based on a radical scavenging test, fluorescence observation of radical generation and spin-trapping electron paramagnetic resonance measurements. Hence, metallic WC with NIR absorption and photocatalytic activity may pave the way for the design of full-solar-spectrum-responsive photocatalysts.

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Metallic tungsten carbide nanoparticles as a near-infrared-driven photocatalyst

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